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<a name="1" href="#1">1</a>   <em class="jxr_comment">/*</em>
<a name="2" href="#2">2</a>   <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em>
<a name="3" href="#3">3</a>   <em class="jxr_comment"> * contributor license agreements.  See the NOTICE file distributed with</em>
<a name="4" href="#4">4</a>   <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em>
<a name="5" href="#5">5</a>   <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em>
<a name="6" href="#6">6</a>   <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em>
<a name="7" href="#7">7</a>   <em class="jxr_comment"> * the License.  You may obtain a copy of the License at</em>
<a name="8" href="#8">8</a>   <em class="jxr_comment"> * </em>
<a name="9" href="#9">9</a>   <em class="jxr_comment"> *      <a href="http://www.apache.org/licenses/LICENSE-2.0" target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.0</a></em>
<a name="10" href="#10">10</a>  <em class="jxr_comment"> * </em>
<a name="11" href="#11">11</a>  <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em>
<a name="12" href="#12">12</a>  <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em>
<a name="13" href="#13">13</a>  <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em>
<a name="14" href="#14">14</a>  <em class="jxr_comment"> * See the License for the specific language governing permissions and</em>
<a name="15" href="#15">15</a>  <em class="jxr_comment"> * limitations under the License.</em>
<a name="16" href="#16">16</a>  <em class="jxr_comment"> */</em> 
<a name="17" href="#17">17</a>  <strong class="jxr_keyword">package</strong> org.apache.commons.logging.pathable;
<a name="18" href="#18">18</a>  
<a name="19" href="#19">19</a>  <strong class="jxr_keyword">import</strong> java.net.URL;
<a name="20" href="#20">20</a>  <strong class="jxr_keyword">import</strong> java.net.URLClassLoader;
<a name="21" href="#21">21</a>  
<a name="22" href="#22">22</a>  <strong class="jxr_keyword">import</strong> junit.framework.Test;
<a name="23" href="#23">23</a>  <strong class="jxr_keyword">import</strong> junit.framework.TestCase;
<a name="24" href="#24">24</a>  
<a name="25" href="#25">25</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.PathableClassLoader;
<a name="26" href="#26">26</a>  <strong class="jxr_keyword">import</strong> org.apache.commons.logging.PathableTestSuite;
<a name="27" href="#27">27</a>  
<a name="28" href="#28">28</a>  <em class="jxr_javadoccomment">/**</em>
<a name="29" href="#29">29</a>  <em class="jxr_javadoccomment"> * Tests for the PathableTestSuite class.</em>
<a name="30" href="#30">30</a>  <em class="jxr_javadoccomment"> */</em>
<a name="31" href="#31">31</a>  
<a name="32" href="#32">32</a>  <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../org/apache/commons/logging/pathable/GeneralTestCase.html">GeneralTestCase</a> <strong class="jxr_keyword">extends</strong> TestCase {
<a name="33" href="#33">33</a>      
<a name="34" href="#34">34</a>      <em class="jxr_javadoccomment">/**</em>
<a name="35" href="#35">35</a>  <em class="jxr_javadoccomment">     * Set up a custom classloader hierarchy for this test case.</em>
<a name="36" href="#36">36</a>  <em class="jxr_javadoccomment">     */</em>
<a name="37" href="#37">37</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">static</strong> Test suite() <strong class="jxr_keyword">throws</strong> Exception {
<a name="38" href="#38">38</a>          Class thisClass = GeneralTestCase.<strong class="jxr_keyword">class</strong>;
<a name="39" href="#39">39</a>          ClassLoader thisClassLoader = thisClass.getClassLoader();
<a name="40" href="#40">40</a>          
<a name="41" href="#41">41</a>          <a href="../../../../../org/apache/commons/logging/PathableClassLoader.html">PathableClassLoader</a> loader = <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/commons/logging/PathableClassLoader.html">PathableClassLoader</a>(<strong class="jxr_keyword">null</strong>);
<a name="42" href="#42">42</a>          loader.useExplicitLoader(<span class="jxr_string">"junit."</span>, thisClassLoader);
<a name="43" href="#43">43</a>          loader.addLogicalLib(<span class="jxr_string">"testclasses"</span>);
<a name="44" href="#44">44</a>  
<a name="45" href="#45">45</a>          <em class="jxr_comment">// reload this class via the child classloader</em>
<a name="46" href="#46">46</a>          Class testClass = loader.loadClass(thisClass.getName());
<a name="47" href="#47">47</a>          
<a name="48" href="#48">48</a>          <em class="jxr_comment">// and return our custom TestSuite class</em>
<a name="49" href="#49">49</a>          <strong class="jxr_keyword">return</strong> <strong class="jxr_keyword">new</strong> <a href="../../../../../org/apache/commons/logging/PathableTestSuite.html">PathableTestSuite</a>(testClass, loader);
<a name="50" href="#50">50</a>      }
<a name="51" href="#51">51</a>      
<a name="52" href="#52">52</a>      <em class="jxr_javadoccomment">/**</em>
<a name="53" href="#53">53</a>  <em class="jxr_javadoccomment">     * Verify that a certain system property is not set, then set it.</em>
<a name="54" href="#54">54</a>  <em class="jxr_javadoccomment">     */</em>
<a name="55" href="#55">55</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> checkAndSetProperties() {
<a name="56" href="#56">56</a>          String prop = System.getProperty(<span class="jxr_string">"no.such.property"</span>);
<a name="57" href="#57">57</a>          assertNull(<span class="jxr_string">"no.such.property is unexpectedly defined"</span>, prop);
<a name="58" href="#58">58</a>          System.setProperty(<span class="jxr_string">"no.such.property"</span>, <span class="jxr_string">"dummy value"</span>);
<a name="59" href="#59">59</a>          prop = System.getProperty(<span class="jxr_string">"no.such.property"</span>);
<a name="60" href="#60">60</a>          assertNotNull(<span class="jxr_string">"no.such.property is unexpectedly undefined"</span>, prop);
<a name="61" href="#61">61</a>      }
<a name="62" href="#62">62</a>      
<a name="63" href="#63">63</a>      <em class="jxr_javadoccomment">/**</em>
<a name="64" href="#64">64</a>  <em class="jxr_javadoccomment">     * Verify that when a test method modifies the system properties they are</em>
<a name="65" href="#65">65</a>  <em class="jxr_javadoccomment">     * reset before the next test is run.</em>
<a name="66" href="#66">66</a>  <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="67" href="#67">67</a>  <em class="jxr_javadoccomment">     * This method works in conjunction with testResetProps2. There is no</em>
<a name="68" href="#68">68</a>  <em class="jxr_javadoccomment">     * way of knowing which test method junit will run first, but it doesn't</em>
<a name="69" href="#69">69</a>  <em class="jxr_javadoccomment">     * matter; whichever one of them runs first will modify the system properties.</em>
<a name="70" href="#70">70</a>  <em class="jxr_javadoccomment">     * If the PathableTestSuite isn't resetting the system properties then whichever</em>
<a name="71" href="#71">71</a>  <em class="jxr_javadoccomment">     * of them runs second will fail. Of course if other methods are run in-between</em>
<a name="72" href="#72">72</a>  <em class="jxr_javadoccomment">     * then those methods might also fail...</em>
<a name="73" href="#73">73</a>  <em class="jxr_javadoccomment">     */</em>
<a name="74" href="#74">74</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testResetProps1() {
<a name="75" href="#75">75</a>          checkAndSetProperties();
<a name="76" href="#76">76</a>      }
<a name="77" href="#77">77</a>  
<a name="78" href="#78">78</a>      <em class="jxr_javadoccomment">/**</em>
<a name="79" href="#79">79</a>  <em class="jxr_javadoccomment">     * See testResetProps1.</em>
<a name="80" href="#80">80</a>  <em class="jxr_javadoccomment">     */</em>
<a name="81" href="#81">81</a>      <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testResetProps2() {
<a name="82" href="#82">82</a>          checkAndSetProperties();
<a name="83" href="#83">83</a>      }
<a name="84" href="#84">84</a>      
<a name="85" href="#85">85</a>      <em class="jxr_javadoccomment">/**</em>
<a name="86" href="#86">86</a>  <em class="jxr_javadoccomment">     * Verify that the context classloader is a custom one, then reset it to</em>
<a name="87" href="#87">87</a>  <em class="jxr_javadoccomment">     * a non-custom one.</em>
<a name="88" href="#88">88</a>  <em class="jxr_javadoccomment">     */</em>
<a name="89" href="#89">89</a>      <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">static</strong> <strong class="jxr_keyword">void</strong> checkAndSetContext() {
<a name="90" href="#90">90</a>          ClassLoader contextLoader = Thread.currentThread().getContextClassLoader();
<a name="91" href="#91">91</a>          assertEquals(<span class="jxr_string">"ContextLoader is of unexpected type"</span>, 
<a name="92" href="#92">92</a>                  contextLoader.getClass().getName(), 
<a name="93" href="#93">93</a>                  PathableClassLoader.<strong class="jxr_keyword">class</strong>.getName());
<a name="94" href="#94">94</a>          
<a name="95" href="#95">95</a>          URL[] noUrls = <strong class="jxr_keyword">new</strong> URL[0];
<a name="96" href="#96">96</a>          Thread.currentThread().setContextClassLoader(<strong class="jxr_keyword">new</strong> URLClassLoader(noUrls));
<a name="97" href="#97">97</a>      }
<a name="98" href="#98">98</a>      
<a name="99" href="#99">99</a>      <em class="jxr_javadoccomment">/**</em>
<a name="100" href="#100">100</a> <em class="jxr_javadoccomment">     * Verify that when a test method modifies the context classloader it is</em>
<a name="101" href="#101">101</a> <em class="jxr_javadoccomment">     * reset before the next test is run.</em>
<a name="102" href="#102">102</a> <em class="jxr_javadoccomment">     * &lt;p&gt;</em>
<a name="103" href="#103">103</a> <em class="jxr_javadoccomment">     * This method works in conjunction with testResetContext2. There is no</em>
<a name="104" href="#104">104</a> <em class="jxr_javadoccomment">     * way of knowing which test method junit will run first, but it doesn't</em>
<a name="105" href="#105">105</a> <em class="jxr_javadoccomment">     * matter; whichever one of them runs first will modify the contextClassloader.</em>
<a name="106" href="#106">106</a> <em class="jxr_javadoccomment">     * If the PathableTestSuite isn't resetting the contextClassLoader then whichever</em>
<a name="107" href="#107">107</a> <em class="jxr_javadoccomment">     * of them runs second will fail. Of course if other methods are run in-between</em>
<a name="108" href="#108">108</a> <em class="jxr_javadoccomment">     * then those methods might also fail...</em>
<a name="109" href="#109">109</a> <em class="jxr_javadoccomment">     */</em>
<a name="110" href="#110">110</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testResetContext1() {
<a name="111" href="#111">111</a>         checkAndSetContext();
<a name="112" href="#112">112</a>     }
<a name="113" href="#113">113</a> 
<a name="114" href="#114">114</a>     <em class="jxr_javadoccomment">/**</em>
<a name="115" href="#115">115</a> <em class="jxr_javadoccomment">     * See testResetContext1.</em>
<a name="116" href="#116">116</a> <em class="jxr_javadoccomment">     */</em>
<a name="117" href="#117">117</a>     <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">void</strong> testResetContext2() {
<a name="118" href="#118">118</a>         checkAndSetContext();
<a name="119" href="#119">119</a>     }
<a name="120" href="#120">120</a> }
</pre>
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